Stage in the annual vegetative cycle of the vine after fruit set. This is the beginning of the ripening of the berries. Depending on the grape variety and weather conditions, this begins in the northern hemisphere at the end of July/beginning of August, in the southern hemisphere in January. The still green and hard berries have reached about half their final size. With the onset of ripening, they gradually change into a softer, plastic state. At a certain degree of softness, the colour change takes place, during which the berries begin to become light (berry brightening) or discoloured. The poisonous green colour of the berries changes to green-white, white, yellow, yellow-green, grey, pink, red or purple in the case of white wine varieties, and to blue, violet or black in the case of red wine varieties. However, this does not happen to all berries at the same time, but first affects those that were fertilised first during flowering and were most exposed to sun and heat.
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